hi diyers,
i've been contemplating on making a PP 2A3 amp and i've been looing hard and long on this schematic for a month now.
and i'm still looking because i don't have a source for the 6A6
duncan amp does not show viable alternatives so i'm pretty stuck. does any of you know what i can put in there?
or maybe i can convince frank (fdegrove) to post his PP 2A3 schema here 😀
i've been contemplating on making a PP 2A3 amp and i've been looing hard and long on this schematic for a month now.
An externally hosted image should be here but it was not working when we last tested it.
and i'm still looking because i don't have a source for the 6A6
duncan amp does not show viable alternatives so i'm pretty stuck. does any of you know what i can put in there?
or maybe i can convince frank (fdegrove) to post his PP 2A3 schema here 😀
While it is not electrically equivalent but merely a good driver tube...
I would consider ECC99, 5687 or 6SN7...to name just a few...
However you would have to change the cathode resistor....(edit) Looks like you could just drop it in...after reading KYW's post. (With a different socket and hookup ofcourse)
So a good alternative would be to look at a different PP2A3 schematic.
Cheers,
Bas
I would consider ECC99, 5687 or 6SN7...to name just a few...
However you would have to change the cathode resistor....(edit) Looks like you could just drop it in...after reading KYW's post. (With a different socket and hookup ofcourse)
So a good alternative would be to look at a different PP2A3 schematic.
Cheers,
Bas
Just found a recent thread on AA discussing the same schematic you posted.
http://www.audioasylum.com/forums/tubediy/messages/55741.html
http://www.audioasylum.com/forums/tubediy/messages/55741.html
Konnichiwa,
As others have said, many different Valves can drop in there with no change. I'd personally take a hint from Dr. Arthur Loesch and use a 5687, with a suitable 56 or 76 as input or perhaps a 53. You find this kind of lineup (56/5687 especially) in the rightly highly acclaimed Loesch/Wiesner SE Amp's and the 56/53 lineup in their conversion of the Webster Theathre Amp's:
http://www.plasmatweeter.de/pp_amp.htm
Sayonara
arnoldc said:
As others have said, many different Valves can drop in there with no change. I'd personally take a hint from Dr. Arthur Loesch and use a 5687, with a suitable 56 or 76 as input or perhaps a 53. You find this kind of lineup (56/5687 especially) in the rightly highly acclaimed Loesch/Wiesner SE Amp's and the 56/53 lineup in their conversion of the Webster Theathre Amp's:
http://www.plasmatweeter.de/pp_amp.htm
Sayonara
arnoldc said:
6N7 is same as 6A6, but has an octal base.
Shouldn't be much trouble to locate 6N7.
53 is same as a 6A6 but has a 2.5 volt filament.
hi guys,
uncle ned, thanks for the sub information. i plan to get some parts for other projects from you soon, while some of my colleagues are in the u.s.
kyw, 5687! perfect! i have a bunch of those and are not hard to find in the Philippines. if they do drop in then that's really ideal. as for the input tube, i have a bunch of 56s and 76s that i can use.
btw, the designer seems familiar... i think i've downloaded one of his schema before - a 56 DC'ed to 2A3. though i have not built it.
his PP 2A3 looks good to if i can find a 53
bas, thanks for the link. i checked them out and i'll also follow the progress.
when i grow up
i will build the lynn olson amps 😀
thanks to all 🙂
frank, you there? 😀 still interested to share your schema? 😉 don't worry you don't have to, just tell me and i'll shut up
uncle ned, thanks for the sub information. i plan to get some parts for other projects from you soon, while some of my colleagues are in the u.s.
kyw, 5687! perfect! i have a bunch of those and are not hard to find in the Philippines. if they do drop in then that's really ideal. as for the input tube, i have a bunch of 56s and 76s that i can use.
btw, the designer seems familiar... i think i've downloaded one of his schema before - a 56 DC'ed to 2A3. though i have not built it.
his PP 2A3 looks good to if i can find a 53
bas, thanks for the link. i checked them out and i'll also follow the progress.
when i grow up
i will build the lynn olson amps 😀 thanks to all 🙂
frank, you there? 😀 still interested to share your schema? 😉 don't worry you don't have to, just tell me and i'll shut up
Hi,
I don't mind at all...it's just that I'll have to draw it up first, won't I?
I will give you a description to go by soon.
Cheers,😉
I don't mind at all...it's just that I'll have to draw it up first, won't I?
I will give you a description to go by soon.
Cheers,😉
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